Associations among white matter microstructural changes and the development of emotional reactivity and regulation in infancy
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View abstract on PubMed
Summary
This summary is machine-generated.Early white matter microstructure changes in infants are linked to emotional regulation development. Alterations in key brain tracts may signal future emotional dysregulation, offering potential early markers for affective disorders.
Area Of Science
- Neuroscience
- Developmental Psychology
- Pediatrics
Background
- Infant emotional reactivity and regulation deficits predict later affective and behavioral disorders.
- White matter (WM) tracts, crucial for emotional regulation, develop rapidly in the first postnatal year.
- Identifying neural markers in early development can reveal pathophysiological processes.
Purpose Of The Study
- To examine the relationship between white matter microstructure development and emotional regulation in infants.
- To identify early neural markers of emotional dysregulation using advanced imaging techniques.
Main Methods
- Utilized Neurite Orientation Dispersion and Density Imaging (NODDI) to assess white matter integrity in infants aged 3-to-9 months (n=39).
- Measured microstructural changes using neurite density index (NDI) and orientation dispersion index (ODI) in specific WM tracts (cingulum bundle, uncinate fasciculus, forceps minor).
- Correlated changes in NODDI measures with changes in emotional reactivity (positive emotionality, soothability).
Main Results
- Increased ODI in the right uncinate fasciculus (UF), forceps minor (FM), and left cingulum bundle (CB) correlated with decreased soothability.
- Increased NDI in the right UF was associated with a smaller increase in positive emotionality (PE).
- These findings suggest microstructural changes in WM tracts are linked to disrupted emotional development.
Conclusions
- Infant white matter microstructure changes in tracts supporting emotional regulation are associated with altered emotional development.
- These findings may provide early neural markers for identifying infants at risk for emotional dysregulation.
- Understanding these early markers has implications for predicting future affective and behavioral trajectories.
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